UE: Radius and Ulna Flashcards Preview

Anatomy > UE: Radius and Ulna > Flashcards

Flashcards in UE: Radius and Ulna Deck (20):
1

What does the head of the radius articulate with?

The capitulum of the humerus.

2

What is the radius?

The radius is a lateral forearm bone, thumb side.

3

_______of the radius allows for pronation and supination of the forearm.

Pivoting of the radius allows for pronation and supination of the forearm.

4

Are the radius and the ulna firmly attached? Why is this important?

The radius and the ulna are not firmly attached. This is important because it allows for pivoting- pronation and supination.

5

Muscles responsible for pronation and supination must insert on the radius.

T/F

True

6

What type of joint is the styloid process?

hinge joint

7

What is the styloid process?

Wrist joitn formed between the carpals and the distal radius.

8

Are the ulna and radius firmly attached?

Yes

9

What is the ulna?

The ulna is a medial forarm bone, pinky side.

10

What is the trochlear notch of the ulna?

Trochlear of radius and trochlear notch of ulna connect together to form a hinge

Allows for rotation

11

Know the structures

A image thumb
12

What is the olceranon process of the ulna?

It fits into the the olecranon fossa when the elbow is flexed.

13

What type of movement does the trochlear notch (where the radius and ulna connect)?

hinge joint

allows for rotation

14

What type of joint does the olecranon process of the ulna have with the humerus?

hinge type joint

15

What type of action does the coronoid process of the ulna allow for?

Flexion and extension

cannot pivot because locked on place

prevents overextension of elbow

16

Radius and ulna are held together by ___________.

Radius and ulna are held together by ligaments.

Helps divide forearm into anterior and posterior muscle compartments.

17

The radius and ulna are totally disconnected.

False- 

an interosseous membrane (sheet-like) that hold radius and ulna together.

18

How the radius and ulna positioned relative to each other in supination?

Radius and ulna are paralled to each other in supianation.

19

The radius cannot move and is locked in place.

T/F

Fale

The radius is NOT located into place.

It can pivot around the humerus.

It can pivot across the ulna.

20